Finding the Third Proportional to 55,687.50 and 88,539.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,687.50 : 88,539.75 = 88,539.75 : x
2. Step 2: Convert to fraction form
   55,687.50/88,539.75 = 88,539.75/x
3. Step 3: Cross multiply
   55,687.50x = 88,539.75 × 88,539.75
4. Step 4: Simplify right side
   55,687.50x = 7,839,287,330.06
5. Step 5: Solve for x
   x = 7,839,287,330.06/55,687.50
6. Step 6: Final answer
   x = 140,772.84